Dumping-bucket.



-L. A. LEHMANN.

DUMPING BUCKET. APPLIOATION FILED NOV. 11. 1907.

PATENTED JUNE 30 1908.

Z SHEETS-SHBET 1.

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No. 891,940. PATENTED JUNE 30, 1908. L. A. LBHMANN.

DUMPING BUCKET.

APPLIOATION FILED N0v.11. 1907.

2 SHEETS-SHEET 2.

WITNESSES substance or material. ably open at 2, while the bOlitOIIl 1s provided LOUIS A. LEHMANN, OF CORONA, NEW YORK.

DUMPING-BUCKET.

Application filed November 11, 1907.

Specification of Letters Patent.

' Patented June so, 1908;

Serial No. 401,667.

To all whom it may concern:

Be it known that I, LOUIS A. LEHMANN, a citizen of the United States of America, and a resident of Corona, borough of Queens, city of New York, and State of New York, have invented certain new and useful 1m rovements in Dumping-Buckets, of whic i the following is a specification.

My invention refers to a dumping bucket used for various purposes such as, for instance, loading and unloading coal, gravel, earth, grain and other substances.

The object is to simplify, erfect and improve the mechanism where )y, the bottom door or doors may be easily closed and held closed after the discharge of the contents of the bucket, and the invention consists essentially in a novel and ingenious arrangement of levers combined with the bucket and the door, and operating in such a m anner that the door may be held tightly closed until the bucket is properly filled, and then by a manual or other operation of the leverage mechanism the door may be easily opened and the contents discharged.

The invention also consists in numerous details and peculiarities in the construction, arrangement and combination of the various parts, substantially as will be hereinafter described and claimed.

In the accompanying drawing illustrating my invention: Figure l is a perspective view of my improved dumping bucket. Fig. 2 is a side elevation of the same, with the bottom door closed. Fig. 3 is a similar side elevation with the bottom door open.

Similar characters of reference denote like parts throughout the different figures of the drawing.

The body 1 of the bucket is made of any desired proportio s and shape, being large or small, and is esigned for use with any The top is prefer- With a singledoor or cover 3, which is adapted to close the lower end of the bucket at times, and at other times to be removed from said lower end so as to allow the latter to be opened for the discharge of the contents of the bucket. This door 2-3 obviously constitutes the bottom of the bucket when closed, or, rather, when made to occupy the horizontal position indicated in Figs. 1 and 2. The bucket 1 may be provided with any suitable bail, as 4, to which some suitable hoisting rope or cable may be connected.

In the use of the bucket, it is way obvious that after it has been filled to the desired point, by shoveling into it through the upper end 2, the wei ht of the contents will rest entirely uponthe closed door 3, and consequently when said door is removed from below'the lower end of the bucket, the contents will be emptied. The bottom door 3 is pivotally hung upon a horizontal shaft 5 which is securely fastened at the ends to the upwardly extending side bars 6 which lie a ongside of the bucket, one on each. side thereof, the upper ends of these side bars 6 being reversely bent at 7 to form a boxing for a grooved pulley 8 which is arran ed to roll on a short inclined track 9 secnreiy fastened to the side of the bucket 1 there bein one of these tracks on each side of sai bucket. The tracks 9 are secured to the bucket by means of rivets 10, or other fastening devices, and the ends of these tracks are formed with projections 11 to limit the movement in each direction of the pulley S. The boxing, containing the pulley 8, is provided with a pin 12 below the track 9, for the purpose of preventing the side bar 6 in its movement rom being thrown upwardly so far that the pulley 8 would be dislodged from the track 9.

The two side bars 6 which carry the pulleys 8, as I have just described, may be rigidly fastened to the rod 5, on which the door 3 is hung, or said rod and the side bars 6 may be made integral with each other, constituting a single right-angled frame embracing the two sides and the bottom of the bucket; but this is a detail of construction or a modification in the recise form of the invention which may )e adopted if preferred. The bottom door 3 is preferably strengthened by means of an angle iece 13 running around the edge thereof an securely fastened there to. The pivoting of the door 3 upon the rod 5 may be accomplished in a variety of ways, and 1 do not wis 1 to be restricted to any particular means. One way is to provide the door 3 with bearings similar to journal boxes on the under side, through which the rod 5 passes. it is essential, however, that what ever means may be devised for this )urpose the door 3 maybe so hung on the l'llli 5 to be capable of turning thereon, so that it may gether by means of. the handle rod 20. The

cal, and their short arms 17 substantially pass from the position shown in Fig. 2, into the position shown in Fig. 3. Furthermore, the pivoting of the rod 5 to the door 3 is off the center line of the door 3 a short distance, so that the door is thereby divided into two parts, one of which 3*, being wider than the other 3', is heavier, this arrangement being for the purpose of causing the door to drop into the vertical position shown in Fig. 3 after it is released from its horizontal position at ,the time the lateral bars 6 recede from the osition shown in Fig. 2 into the position s iown in Fig. 3, simultaneously drop ing the door 3- and shifting it to one side beyond the lower corner of the bucket, so that the heavier weight of the part 3 may drop it into the vertical position as already stated. Whenthe door is thus bein shifted and the lateral bars 6 are moving horizontally, the rollers 8 on both sides of the bucket are traveling down the inclined track 9, which results in bodily carrying the door 3 to one side, and also dro ping it slightly below the bottom edge of t e bucket, this latter movement resulting from the inclination of the track 9. I

14, 14 denote links, one at each side of the bucket 1, which are pivoted at 15 to the side bars 6 at oints about midway of the length of said si e bars 6. The other ends of the links 14 are pivotally connected at 16 to the ends of the shorter arms 17 of the angular or bell crank levers 18, whose longer arms 19 project downwardly and are connected to" bell crank levers 18 are pivoted at their angular oints to the op osite sides of the bucket 1 y means of suita le pivoting means 21. By lifting the handle rod 20 the bell crank levers 18 are rotated upon their pivots 21, the consequence of. which is that the links 14 are actuated and in turn they impart motion to the side bars 6 which carry the door 3.

In Fig. 2 the door 3 is shown as closed, and in Fig. 3 asopen. The various levers which I have described composing the leverage mechanism for actuating the door 3 are m Fig. 2 represented in one osition, and in mechanical device may parta Fig. 3 in another osition. en the door 3 is closed the hen le bar 20 is down alongside one of the faces of the bucket, and it will remain in this position until lifted, because the bell crank levers 18 are at this time situated with their long arms 19 substantially vertihorizontal, so that the links 14 are locked in the position where they hold the side bars 6 and the supported door 3 in an immovable position. in order to guard against any possibility of movement of the handlebar 20 at this time, which might prematureli open the door 3, which movement of the andle bar 20 might occur through undue jarring of l the bucket, or the handle bar 20 being caught by some entangling piece of mechanism, I hinge to the side of the bucket at 22 a short arm 23 which may be caused to project over the handle bar 20 and revent it from rising. Assuming that the buc et is filled with material which it is desired to discharge, the process of opening the door 3 consists of disengaging the handle 20 from the retaining bar 23 and lifting it into the position shown in Fig. 3, theresult of which act throws the bell cranks 18 around u on their pivots 21, reversing the position 0? the short arms 17 and consequently throwing the links 14 in a backward direction, which will actuate the side bars 6, which .will be likewise moved backward, carrying with them the door 3 which at the same time drops enough toenable it to clear the bottom of the bucket. .[n this way the bottom 3 is removed from the lower end-of the bucket andthe contents thereof allowed to be discharged.

I do not wish to be confined to the idea of pivotally'connecting the lower ends of the side bars 6 and the rod 5 to the door 3 at a oint 0d the center, for although this may e a preferable method of pivotally su porting the bottom for the urpose herein efore specified, yet I am at li erty, when it is desired, to locate the rod 5 centrally across the bottom of the door 3, and when this center pivoting is employed it will be found in practice that the weight on the door 3 at the time of its opening will be suflicient to cause it to drop into the vertical position indicated in Fig. 3. Further, instead of manually lifting the handle bar 20 when the bucket is to be discharged, some mechanical device may be rigged for the same pur ose, but this l e of a wide variety of forms; and also 1 wish it to be distinctly understood that the pivoting of the door to the rod 5 and the bars 6 may be changed materially in the details so long as the pivoting idea remains.

It is important, to obtain the best results, that when the handle bar 20 is dropped into its locking position, as shown in Fig. 1, the link 14 should be below the pivot pin 21 of the angular lever 18. This link 14 as we have seen is ivoted at one end to the side bar 6 and at t e other end to the short leg 17 of the angular lever 18. When the angular lever 18 is caused to occu y the position shown in Figs. 1 and 2, the s ort leg or lever 17 thereof, to which the link 14 is pivoted, is placed in such a position that this link 14 is, as I have just said, below the pivot 21 Consequently with the bottom 3 now closed, the additional wei ht on said bottom caused by the filling in o" the load of material will pull downwardly on the side bars 6 which will cause a downward ull on the links 14; but, as these are pivoted to the short legs 17 of the angular levers 18, the pull on these angular levers will be below their pivot pins 21, and the eil'ect of such a pull Will only be to cause the handle bar 20 to more tightly bind against the side of the bucket, as in l-ig. 1, and hence there will be no possibility of opening the bottom of the bucket on account of the weight of material therein. In case the arrangement of the arts of the leverage were such that the lin (S 14 were above the )ivot pin 21., this cil'ect would not lotlow, and there would be a tendency to pull the angular levers over into the position, or towards the position, shown in Fig. 3, and cause an opening of the bottom of the bucket, which 'could only be prevented by suitable means to hold the handle bar 20 down in its position against the side of the bucket. Although there may be cases where the links 14 might be placed above the pivot pins, yetit is one of the leading features of my present invention to have them located below the pivot pins when the bottom door is closed.

, Many changes in the precise construclion, combination and arrangement ol the various parts may be made without exceeding the scope of the invention.

Having thus described my invention, what I claimas new and desire to secure by Letters Patent, is:-

1. in a dumping bucket, the combination with a bucket, of a door, and. means for pivotallv supporting the sal'ne, said means operating to 0 ion the door by shifting it to one side and s ightly dropping it below the bucket, and said means including an in-' clincd track along which the supporting mechanism is adapted to travel.

2. In a dumping bucket, the combination with a bucket, ol a door therefor, lateral means pivotally connected to the bucket, said means being movably hung on inclined surfaces at the sides ol the bucket. and ope"- ating to shift the door and drop it snllicicntly l'az' below the bucltet to permit its opening on its pivotal support.

2%. in a dumping bucket, the combination with a bucket and a door therefor, of means carrying said door to which means the door is pivotally conncctcd, lateral rails on the bucket on which move rollers forming a part ol' the door supporting means, and a leverage mechanism which controls .the opening and closing ol' the door.

1 'lbc combination with the bucket and its door, of side bars pivotally supporting the door, rollers carried by said side bars, and inclined tracks for the rollcrs, all substantially as described.

The combination with a bucket and its door, ol' lateral side bars pivolallv supporting the door, inclincd tracks on the sides ol the bucket along which tracks the side bars are .movablo, links pivoted to the side bars, pivoted bcll crank lcvcrs pivoted to the opposite ends of the links, and means for operating the bell crank lcvcrs in opening and closing the door.

(3. 'lhc combination ol a bucket, a door at the bottom thcrcol', lateral bars pivotally .supporting the door, inclined. rails on which the side bars are movable, and a leverage mechanism for actuating the side bars, together with means for operating said leverage mechanism.

T, The combination of a dumping bucket, a door at the bottom thcrcol, a rod on which the door is movably hung, lateral side barscarrying said rod, inclined rai m which the side bars hang and move, links pivoted to the side bars, and lovers for operating the links.

S. in a dumping bucket, the combination with the bucket, of a door at the bottom thcrcol, lateral mcans pivotally connected to said door at a point oil the center line, inclincs on which the sidc bars are movably supported, and means for controlling the action ol' the side bars in opening and closing tllO door. I

9. ln a dumping buckct, the combination with a bucket and a door, ol' moanspivotally supporting said door, inclines on which said means is movably supported so as to travel bodily along said inclines, and a leverage l'or actuating the aforesaid means.

ll). in a dumping bucket, the combination with a bucket and a door, of m ans l'or supporting said door, inclines on the side of the bucket on which the supporting moans are hung and bodily travel, and a leverage l'or actuating said means, said lcveragc incliniing links located below the pivotal points ol the leverage to provide a locking cll'cct when the door is closed.

Signcd at New York city, this 7th day of November, 1907.

LOlil 1i. lllGllMANNQ Wit ncsscs:

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